[Diagnostics of nonmuscle-invasive urothelial cell carcinoma of the bladder].

Cystoscopy and transurethral resection in combination with urinary cytology are integral parts of the diagnosis and therapy of urothelial cell carcinoma of the bladder. Given the fact that low grade bladder cancer has high recurrence and extremely low progression rates, the benefit for additional diagnostics needs to be further evaluated. In high grade tumors, early and accurate diagnosis is of high importance. Fluorescence cystoscopy and narrow band imaging are procedures to increase the detection rate. This article provides an overview of the current value of these two procedures.